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Multiple piece turbine airfoil

United States Patent

November 2, 2010
View the Complete Patent at the US Patent & Trademark Office
A turbine airfoil, such as a rotor blade or a stator vane, for a gas turbine engine, the airfoil formed as a shell and spar construction with a plurality of dog bone struts each mounted within openings formed within the shell and spar to allow for relative motion between the spar and shell in the airfoil chordwise direction while also forming a seal between adjacent cooling channels. The struts provide the seal as well as prevent bulging of the shell from the spar due to the cooling air pressure.
Kimmel; Keith D (Jupiter, FL), Wilson, Jr.; Jack W. (Palm Beach Gardens, FL)
Florida Turbine Technologies, Inc. (Jupiter, FL)
12/ 467,009
May 15, 2009
GOVERNMENT LICENSE RIGHTS This invention was made with Government support under contract number DE-FG02-07ER84668 awarded by Department of Energy. The Government has certain rights in the invention.